It seems we've mastered every part of the car-building process. When our engines wore out, we bought a book and rebuilt them. When the body shop gave us our first estimate, we learned how to paint. We ...
Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. A sewing machine is a ...
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